LM5039 Half-Bridge PWM Controller with Advanced Current Limit | TI.com

LM5039 (ACTIVE)

Half-Bridge PWM Controller with Advanced Current Limit

 

Description

The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.

Features

  • 105V / 2A Half-Bridge Gate Drivers
  • Synchronous Rectifier Control Outputs with Programmable Delays
  • High Voltage (105V) Start-up Regulator
  • Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting
  • Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition
  • Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event
  • Adjustable Peak Cycle-by-Cycle Over Current Protection
  • Resistor Programmed, 2MHz Capable Oscillator
  • Patented Oscillator Synchronization
  • Programmable Line Under-Voltage Lockout
  • Internal Thermal Shutdown Protection
  • Adjustable Soft-Start
  • Direct Opto-Coupler Interface
  • 5V Reference Output

Packages

  • HTSSOP-20 (Thermally enhanced)
  • WQFN-24 (4mm x 5mm)

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in PWM controllers & resonant controllers

 
Topology
Control method
VCC (Min) (V)
VCC (Max) (V)
Frequency (Max) (kHz)
UVLO thresholds on/off (V)
Duty cycle (Max) (%)
Gate drive (Typ) (A)
Features
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
LM5039 LM5035B LM5035C LM5036 UCC28250 UCC28251
Full-Bridge
Half-Bridge
Push-Pull    
Half-Bridge     Half-Bridge
Push-Pull    
Full-Bridge
Half-Bridge
Push-Pull    
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Voltage     Feedforward
Voltage    
Feedforward
Voltage    
Feedforward
Voltage    
Current
Voltage    
Current
Feedforward
Voltage    
8     8     8       4.7     4.7    
15     15     15       17     17    
2000     2000     2000     2000     1000     1000    
Programmable/1.25V     Programmable/1.25V     Programmable/1.25V     Programmable/1.25V     4.3/4.1     4.3/4.1    
50     50     50     50     100     100    
2     2     2     2     0.2     0.2    
Current Limiting
HV Start-up
Multi-topology
Synchronization Pin    
Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Current Limiting
Frequency Synchronization
HV Start-up
Input Line Monitor
Integrated Switch
Leading Edge Blanking
Multi-topology
Pre-Bias Start-Up
Soft Start
Synchronization Pin
Thermal Shutdown
Wide DC input    
Current Limiting
HV Start-up
SR Logic    
Current Limiting
Leading Edge Blanking
Multi-topology
Pre-Bias Start-Up
Programmable Slope Compensation
SR Logic
Soft Start
Synchronization Pin    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
HTSSOP | 20
WQFN | 24    
HTSSOP | 20
WQFN | 24    
HTSSOP | 20
WQFN | 24    
WQFN | 28     QFN | 20
TSSOP | 20    
QFN | 20
TSSOP | 20    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
28WQFN: 25 mm2: 5 x 5 (WQFN | 28)     20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)